Discuss.

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>A-B

>>8966490

The latter is preferable but one instantly understands both conventions on sight, so that the existence of both conventions presents almost no practical difficulty, except in situations where perhaps they are carelessly switched between in a given text, which shouldn't ordinarily happen to begin with.

A\B is set difference
A-B is the difference of sets, i.e.
[math] A-B=\{ a-b \mid a\in A, b\in B\} [/math]

>>8966520
That's retarded

>>8966547
what is? that's standard notation lmao

I would prefer if the right was the standard notation, but it isnt so I use the left

>>8966555
trips are never wrong

>>8966555
That is not standard notation anywhere. Moreover those can't be ordinary sets for that to even make sense. They have to have a subtraction defined between them in some way.

The former is better. Only brainlets prefer the latter.

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>>8966852
>That is not standard notation anywhere.
lmao why do you act like you know all the standard notation used in math brainlet?

>Moreover those can't be ordinary sets for that to even make sense. They have to have a subtraction defined between them in some way.
>implying you can't take formal differences
might want to broaden your math knowledge brainlet

>>8966547
tbf ive seen -A to denote [math]\{-a:a\in A\}[/math] a fair amount

>>8966885
>R - {3} is the set of all real numbers minus 3, or R

>>8967033
you get it! good work!

[eqn]{\displaystyle A-B=\{\mathbf {c} \,|\,\mathbf {c} +B\subseteq A\}} [/eqn]

https://en.wikipedia.org/wiki/Minkowski_addition

I use the latter simply because I can never remember if the other is a forward or backward slash.

>>8966555
That definition of A-B is not set theoretical

>>8967071
how so? define set theoretical

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>>8966490
>not using [math]A \cap B^C[/math]

>>8966498
fuck you

>>8967043
WOW

>>8966490
[math]A\B[/math].